在实验室条件下 ,通过对东北黑土、华北褐土、华南红土中 3次添加氯氰菊酯的降解研究发现 :氯氰菊酯在 3种土壤中的降解是以微生物降解为主 ,化学降解为辅 ;土壤间理化性质的不同对化学降解速率没有明显影响 ,多次施药则因较难降解的顺式异构体在土壤中积累而使半衰期延长。 Under the laboratory conditions, through the degradation of cypermethrin in the northeast black soil, the northern China cinnamon soil and the southern China laterite, the degradation of cypermethrin in three soils was mainly characterized by microbial degradation and chemical degradation, while the inter-soil physicochemical The different nature of the chemical degradation rate had no significant effect, multiple application because of the more difficult to biodegradable cis-isomer accumulation in the soil so that the half-life extension.